isn’t a question about VRE so much as about how cameras are handled for VR in engine. I didn’t setup the camera behavior, Epic did.
However to “line” them up you would place the new actor in the exact same location, the camera moves in relative space, the actors location is the center of the tracked roomscale. If you have a tracked camera on one pawn/actor and a tracked camera on another pawn/actor the camera will be at the same relative space position in each when tracking is enabled.
If you want to place the HMD at a specific location you can move the actor to that location minus the relative position of the camera. Or if you are using my character class you can call SetActorLocationAndRotationVR to directly move it to place the HMD at a specific spot.